One problem related to transmission solenoid has been reported for the 2007 Toyota Camry. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota Camry based on all problems reported for the 2007 Camry.
I purchased a 2007 Camry 4 cylinder in sept 2006. This is the 6th Toyota I have owned and is by far the worst reforming. I have 8000 miles on the car and have had problems with the transmission since the initial purchase. The car is not safe to drive as it presently performs. It significantly hesitates when accelerating such as when entering a highway or changing lanes on the interstate. There is a noticeable 1-2 second delay from the time the accelerator is depressed and the car begins to accelerate. In addition, when in cruise control, the transmission seems to be searching for the correct gear with the engine revving up significantly as it downshifts while going up an incline. I have been back to the dealer 5 times and had the NY regional Toyota rep drive the car. The transmission solenoid has been replaced, and a corrective TSB has been performed twice. I have also called Toyota in California. The car still does not perform properly and is hazardous to drive. The response from the dealer and Toyota has been "the car is performing as designed".